jfruh writes: "Here's a pressing mystery: despite users spending an increasing amount on their mobile phones, mobiile advertising only produces 20% of the revenues per page that web advertising does. This seems like a big opportunity for somebody, but a whole complex of reasons might mean that it isn't just a matter of someone being smart enough to do mobile ads right. The whole advertising industry, which in many ways still resembles the Mad Men-era old boy's network, simply may not be equipped to cope."